1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *
4  * Author	Karsten Keil <kkeil@novell.com>
5  *
6  *   Basic declarations for the mISDN HW channels
7  *
8  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
9  */
10 
11 #ifndef MISDNHW_H
12 #define MISDNHW_H
13 #include <linux/mISDNif.h>
14 #include <linux/timer.h>
15 
16 /*
17  * HW DEBUG 0xHHHHGGGG
18  * H - hardware driver specific bits
19  * G - for all drivers
20  */
21 
22 #define DEBUG_HW		0x00000001
23 #define DEBUG_HW_OPEN		0x00000002
24 #define DEBUG_HW_DCHANNEL	0x00000100
25 #define DEBUG_HW_DFIFO		0x00000200
26 #define DEBUG_HW_BCHANNEL	0x00001000
27 #define DEBUG_HW_BFIFO		0x00002000
28 
29 #define MAX_DFRAME_LEN_L1	300
30 #define MAX_MON_FRAME		32
31 #define MAX_LOG_SPACE		2048
32 #define MISDN_COPY_SIZE		32
33 
34 /* channel->Flags bit field */
35 #define FLG_TX_BUSY		0	/* tx_buf in use */
36 #define FLG_TX_NEXT		1	/* next_skb in use */
37 #define FLG_L1_BUSY		2	/* L1 is permanent busy */
38 #define FLG_L2_ACTIVATED	3	/* activated from L2 */
39 #define FLG_OPEN		5	/* channel is in use */
40 #define FLG_ACTIVE		6	/* channel is activated */
41 #define FLG_BUSY_TIMER		7
42 /* channel type */
43 #define FLG_DCHANNEL		8	/* channel is D-channel */
44 #define FLG_BCHANNEL		9	/* channel is B-channel */
45 #define FLG_ECHANNEL		10	/* channel is E-channel */
46 #define FLG_TRANSPARENT		12	/* channel use transparent data */
47 #define FLG_HDLC		13	/* channel use hdlc data */
48 #define FLG_L2DATA		14	/* channel use L2 DATA primitivs */
49 #define FLG_ORIGIN		15	/* channel is on origin site */
50 /* channel specific stuff */
51 #define FLG_FILLEMPTY		16	/* fill fifo on first frame (empty) */
52 /* arcofi specific */
53 #define FLG_ARCOFI_TIMER	17
54 #define FLG_ARCOFI_ERROR	18
55 /* isar specific */
56 #define FLG_INITIALIZED		17
57 #define FLG_DLEETX		18
58 #define FLG_LASTDLE		19
59 #define FLG_FIRST		20
60 #define FLG_LASTDATA		21
61 #define FLG_NMD_DATA		22
62 #define FLG_FTI_RUN		23
63 #define FLG_LL_OK		24
64 #define FLG_LL_CONN		25
65 #define FLG_DTMFSEND		26
66 #define FLG_TX_EMPTY		27
67 /* stop sending received data upstream */
68 #define FLG_RX_OFF		28
69 /* workq events */
70 #define FLG_RECVQUEUE		30
71 #define	FLG_PHCHANGE		31
72 
73 #define schedule_event(s, ev)	do { \
74 					test_and_set_bit(ev, &((s)->Flags)); \
75 					schedule_work(&((s)->workq)); \
76 				} while (0)
77 
78 struct dchannel {
79 	struct mISDNdevice	dev;
80 	u_long			Flags;
81 	struct work_struct	workq;
82 	void			(*phfunc) (struct dchannel *);
83 	u_int			state;
84 	void			*l1;
85 	void			*hw;
86 	int			slot;	/* multiport card channel slot */
87 	struct timer_list	timer;
88 	/* receive data */
89 	struct sk_buff		*rx_skb;
90 	int			maxlen;
91 	/* send data */
92 	struct sk_buff_head	squeue;
93 	struct sk_buff_head	rqueue;
94 	struct sk_buff		*tx_skb;
95 	int			tx_idx;
96 	int			debug;
97 	/* statistics */
98 	int			err_crc;
99 	int			err_tx;
100 	int			err_rx;
101 };
102 
103 typedef int	(dchannel_l1callback)(struct dchannel *, u_int);
104 extern int	create_l1(struct dchannel *, dchannel_l1callback *);
105 
106 /* private L1 commands */
107 #define INFO0		0x8002
108 #define INFO1		0x8102
109 #define INFO2		0x8202
110 #define INFO3_P8	0x8302
111 #define INFO3_P10	0x8402
112 #define INFO4_P8	0x8502
113 #define INFO4_P10	0x8602
114 #define LOSTFRAMING	0x8702
115 #define ANYSIGNAL	0x8802
116 #define HW_POWERDOWN	0x8902
117 #define HW_RESET_REQ	0x8a02
118 #define HW_POWERUP_REQ	0x8b02
119 #define HW_DEACT_REQ	0x8c02
120 #define HW_ACTIVATE_REQ	0x8e02
121 #define HW_D_NOBLOCKED  0x8f02
122 #define HW_RESET_IND	0x9002
123 #define HW_POWERUP_IND	0x9102
124 #define HW_DEACT_IND	0x9202
125 #define HW_ACTIVATE_IND	0x9302
126 #define HW_DEACT_CNF	0x9402
127 #define HW_TESTLOOP	0x9502
128 #define HW_TESTRX_RAW	0x9602
129 #define HW_TESTRX_HDLC	0x9702
130 #define HW_TESTRX_OFF	0x9802
131 #define HW_TIMER3_IND	0x9902
132 #define HW_TIMER3_VALUE	0x9a00
133 #define HW_TIMER3_VMASK	0x00FF
134 
135 struct layer1;
136 extern int	l1_event(struct layer1 *, u_int);
137 
138 #define MISDN_BCH_FILL_SIZE	4
139 
140 struct bchannel {
141 	struct mISDNchannel	ch;
142 	int			nr;
143 	u_long			Flags;
144 	struct work_struct	workq;
145 	u_int			state;
146 	void			*hw;
147 	int			slot;	/* multiport card channel slot */
148 	struct timer_list	timer;
149 	/* receive data */
150 	u8			fill[MISDN_BCH_FILL_SIZE];
151 	struct sk_buff		*rx_skb;
152 	unsigned short		maxlen;
153 	unsigned short		init_maxlen; /* initial value */
154 	unsigned short		next_maxlen; /* pending value */
155 	unsigned short		minlen; /* for transparent data */
156 	unsigned short		init_minlen; /* initial value */
157 	unsigned short		next_minlen; /* pending value */
158 	/* send data */
159 	struct sk_buff		*next_skb;
160 	struct sk_buff		*tx_skb;
161 	struct sk_buff_head	rqueue;
162 	int			rcount;
163 	int			tx_idx;
164 	int			debug;
165 	/* statistics */
166 	int			err_crc;
167 	int			err_tx;
168 	int			err_rx;
169 	int			dropcnt;
170 };
171 
172 extern int	mISDN_initdchannel(struct dchannel *, int, void *);
173 extern int	mISDN_initbchannel(struct bchannel *, unsigned short,
174 				   unsigned short);
175 extern int	mISDN_freedchannel(struct dchannel *);
176 extern void	mISDN_clear_bchannel(struct bchannel *);
177 extern void	mISDN_freebchannel(struct bchannel *);
178 extern int	mISDN_ctrl_bchannel(struct bchannel *, struct mISDN_ctrl_req *);
179 extern void	queue_ch_frame(struct mISDNchannel *, u_int,
180 			int, struct sk_buff *);
181 extern int	dchannel_senddata(struct dchannel *, struct sk_buff *);
182 extern int	bchannel_senddata(struct bchannel *, struct sk_buff *);
183 extern int      bchannel_get_rxbuf(struct bchannel *, int);
184 extern void	recv_Dchannel(struct dchannel *);
185 extern void	recv_Echannel(struct dchannel *, struct dchannel *);
186 extern void	recv_Bchannel(struct bchannel *, unsigned int, bool);
187 extern void	recv_Dchannel_skb(struct dchannel *, struct sk_buff *);
188 extern void	recv_Bchannel_skb(struct bchannel *, struct sk_buff *);
189 extern int	get_next_bframe(struct bchannel *);
190 extern int	get_next_dframe(struct dchannel *);
191 
192 #endif
193